[Milsurplus] ISO Info on a TS-33/AP Test Set

[J. Forster]

Hi,

I have a TS-33/AP Test Set which is a microwave frequency meter and tuned
detector. There is a micrometer type frequency adjustment and both an analog
meter and a detected video output. The frequencies are coyly listed on the cal
chart as 'a,b,c,   '. along with dial settings and a MC/div listing for
interpolation. There are also some spare microwave type crystals and adapters.
It's in a pristine dark gray case, perhaps Navy.

Anybody know what it's frequency range is and what system it was used with?

TIA,
John